CVE-2022-40695 in SEO Redirection Plugin
Summary
by MITRE • 11/19/2022
Multiple Cross-Site Scripting (CSRF) vulnerabilities in SEO Redirection Plugin plugin <= 8.9 on WordPress.
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Analysis
by VulDB Data Team • 12/20/2022
The CVE-2022-40695 vulnerability represents a critical security flaw affecting the SEO Redirection Plugin version 8.9 and earlier on WordPress platforms. This vulnerability manifests as multiple cross-site scripting flaws that can be exploited by malicious actors to execute arbitrary scripts within the context of authenticated admin sessions. The issue stems from inadequate input validation and output sanitization mechanisms within the plugin's administrative interfaces, creating persistent vectors for attacker-controlled code execution. The vulnerability specifically impacts WordPress installations where the SEO Redirection Plugin is active, making it particularly concerning given the widespread adoption of this plugin across various web properties.
The technical implementation of this vulnerability occurs through improper handling of user-supplied data within the plugin's administrative components. Attackers can leverage these flaws by crafting malicious requests that bypass standard security controls, allowing them to inject and execute malicious scripts in the browsers of authenticated administrators. The CSRF nature of these vulnerabilities means that attackers can trick administrators into executing unintended actions without their knowledge, effectively compromising the entire WordPress installation. The flaw exists in the plugin's handling of redirection rules and configuration parameters, where insufficient sanitization allows malicious payloads to persist and execute when administrative users interact with affected interfaces. This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities in web applications.
The operational impact of CVE-2022-40695 extends beyond simple script execution, potentially enabling complete compromise of affected WordPress installations. An attacker who successfully exploits these vulnerabilities can gain administrative privileges, modify or delete content, install malicious plugins, and exfiltrate sensitive data from the compromised site. The vulnerability creates a persistent backdoor that can be used for ongoing attacks, data theft, and further network compromise. Given that many WordPress sites rely on SEO Redirection Plugin for managing URL rewrites and redirections, the attack surface is substantial. The vulnerability also poses risks to the broader WordPress ecosystem as compromised sites can be used as launching points for attacks against other connected systems. This aligns with ATT&CK technique T1059.007 for command and scripting interpreter, where the initial compromise allows for further lateral movement and privilege escalation.
Mitigation strategies for CVE-2022-40695 should prioritize immediate plugin updates to versions that address the identified vulnerabilities. System administrators should implement comprehensive monitoring for suspicious administrative activities and unauthorized configuration changes. Network-level defenses including web application firewalls and intrusion detection systems can help detect and block exploitation attempts. Regular security audits of installed plugins and themes should be conducted to identify outdated components that may harbor similar vulnerabilities. The remediation process must include thorough testing of updated plugin versions to ensure compatibility with existing site configurations. Organizations should also implement principle of least privilege controls for administrative accounts and establish regular security patching schedules. Additionally, implementing Content Security Policy headers can provide additional protection against script injection attacks, while regular backup strategies ensure rapid recovery in case of successful exploitation attempts.